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问题 单项选择题 A1/A2型题

胺类药物的一般特性不正确的是（）

A.具有芳伯氨基的重氮化反应、重氮化-偶合反应以及与芳醛反应

B.仲、叔氨基的碱性

C.芳香环的紫外吸收特征

D.酰胺与酯的水解反应

E.酸的特性

答案

参考答案：E

解析：胺类药物的一般特性为具有芳伯氨基的重氮化反应，重氮化-偶合反应以及与芳醛反应，仲、叔氨基的碱性，芳香环的紫外吸收特征、酰胺与酯的水解反应，盐的特性。

完形填空
完形填空。
     Many years ago, a man    1       Wu taught King Wang how to ride horses and how to drive  a chariot (马拉战车). 2       some time the king started to race against Wu. But no matter how many 3      the king
raced against Wu, Wu always won.
     The king was     4      and said to Wu,  “You have taught me how to ride and how to drive a chariot.
But  I don’t think you have taught me everything about    5    . ” “I have taught you       6   I know” 
   7     Wu. “But you have not learned everything.  The     8     thing about driving a chariot is to think of
the horses.  The driver of the chariot and the horses should work together. You can then go very   9    and drive for long distances. But your problem is this:   When you are behind me, you want to      10   with me. And when you are   11     me, you are afraid that I will catch up with you.    12     whether you are in front of me or behind me, you are thinking of me. You are not thinking of your   13     .If you want to  win,  you
must 14   thinking of me. You   15   think only of your horses. ”
( ) 1. A. calls      
( ) 2. A. In        
( ) 3. A. times      
( ) 4. A. happy      
( ) 5. A. playing    
( ) 6. A. everything
( ) 7. A. asked      
( ) 8. A. dangerous  
( ) 9. A. slowly    
( ) 10.A. catch up  
( ) 11.A. beside    
( ) 12.A. So        
( ) 13.A. cows      
( ) 14.A. start      
( ) 15.A. mustn't   		B. names        
B. After        
B. days        
B. glad        
B. racing      
B. something    
B. told        
B. newer        
B. soon        
B. do          
B. in front of  
B. But          
B. dogs        
B. stop        
  B. may         		C. called      
C. Since      
C. weeks      
C. pleased    
C. running    
C. anything    
C. answered    
C. beautiful  
C. fast        
C. talk        
C. near        
C. Or          
C. pigs        
C. keep        
C. must       		  D. name          
  D. Before        
  D. months        
  D. unhappy        
  D. working        
  D. nothing        
  D. spoke          
  D. most important
  D. slow          
  D. help          
  D. next to        
  D. And            
  D. horses        
  D. begin          
   D. can          
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单项选择题

某山村近年儿童中新发现牙齿有黄斑的人增多。

考虑可能是什么疾病？（）

A．铅中毒

B．汞中毒

C．铬中毒

D．镉中毒

E．氟中毒
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